HI Borate -- thanks so much for responding. As instructed, please find the shareable link below. Within the very first scene, you can see how "Breckenridge 2019" overlays the iphone video and into the black borders. But whenever I export it, the overlay seems to disappear and only the letters within the width of the iphone video remain. The other text overlays I have in the video also run into this problem.
At 3:13 I have an iphone video clip I took horizontally -- which when playing within the project, fills up the full screen. But when I export it, this again shrinks down to only the size of the vertical video. The aspect ratio of this clip is 16:9.
Finally - I've tried exporting this straight to youtube in 1080, 720, 16:9 vertical, as well as straight to google drive, with 1080, 720, mp4 and mov, letterbox, and crop and zoom, ,and finally, 1024 TV wide -- and nothing works. I also tried editing just the first video clip of the project into a 16:9 ratio, thinking maybe that would work to "trick" the export into the right width. That didn't work either. I also added an additional layer of just black background thinking that too could trick the export into the right width, and of course that didn't work either. Really hope you can assist. Thanks again for your time!
https://drive.google.com/file/d/1CfjI1UZkc2gtmKsoPq8YyEnVSypePKks/view?usp=sharing